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Harmonic Logo Harmonic · IT - Software Development

Full Stack Product Engineer (AI), Search

United States, New York 160000.00 - 210000.00 USD / Year · Job Posted January 20, 2026
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Job Description

Build AI-fueled products for VC on a tight-knit, fast-paced team working across the stack on the cutting edge of AI frameworks, LLM models, and the next-gen of AI-first product experiences. Shape AI-native experiences at the forefront, proving out new functional patterns.

Job Responsibility

  • Build and ship end-to-end AI capabilities – from core features in our LangGraph backend, to critical user journeys in the frontend React UI
  • Be hands on rapidly prototyping, benchmarking, and tuning usage of LLM models and agentic architectures
  • Establish and build new evaluation frameworks
  • Partner with human (+ LLM) evaluators to constantly improve user outcomes for AI-driven experiences
  • Collaborate with product, design, data, and go-to-market teams to design and build AI-first product experiences that make investors 10x more productive

Requirements

  • 3–5 years of software engineering experience
  • Substantial exposure to full-stack development in Python and React
  • A love for keeping up with the latest AI/LLM models, new frameworks, and experimenting with AI-native tools
  • Strong problem-solving skills
  • A track record of driving product development initiatives in fast-paced environments
  • Top-tier product taste, unrelenting curiosity, and customer-obsession

What we offer

  • Top of the line health, dental and vision insurance, with 100% premium covered
  • 401k matching
  • Free lunch in office
  • Monthly team dinner for each office
  • Commuter benefits
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